This area is occupied by permeable silt loam to silty clay loam soils on the ridges and impermeable clays in the basins, neutral to slightly acid in reaction. General soil types include predominantly grey floodplain soils. Organic matter content is low in ridges and moderate in basins. Soils are deficient in N, P, and S but the status of K and Zn are reasonable.
4. Physiography-
Young Brahmaputra Floodplain
(AEZ 8)
There are 3 sub regions of this physiography
High Jamuna Floodplain;
Upper Brahmaputra Floodplain;
Upper Brahmaputra-Jamuna
Floodplain.
Land form - There are many chars.
Mouja name - Duariya .
Area(Mouja)- 12 hectare
4
5. Soil Series- Melandoh
New Bramaputra Palolvumi is medium high
and medium low land with poorly drained
languor penetrating soil.
5
Level Color Texture Consistency
(wet)
pH Draina
ge
Upper
level
Gray Loamy loose Moderately
acidity &
alkalinity
Poorly
Middle
level
Gray
brown
Loamy loose Moderately
alkalinity
Low
level
Gray Loam/ Sandy
loam
loose Moderately
alkalinity
6. Land form of soil series & their quality
soil series Land form Texture pH O.M N P Ca B
(%) (%) (µ gm/gm soil)
Melandoh
M. High L. Loam/sand
y loam
4.8-7.2 1.41 0.1 7.49 7.16 0.34
M. Low
L.
Loam/sand
y loam
4.6-6.1 1.31 0.1 10.0
8
6.62 0.27
6
7. Potential crop formation according
to the soil
7
Land
form
Soil
series
Useful crop(Without irrigation) Annual
Perenni
al
Potential crop
formation
Rabi Kharif
1
Kharif 2
Medium
high
land
Mela
ndoh
•Carrots,Rye,
Wheat,sweet
potato,onion,
cowan,groun
dnut,mustard,
Red spinach
Woven
aus,Jute,
Cowan,
Plantation
aman,
Woven
aus
Colocasia >Rabi crops-fallow-
woven aus-jute-
Plantation aman
(L/H),
>Rabi crops-fallow-
Woven aman.
>Rabi crops-fallow-
Plantation aman.
>fallow-fallow-
plantation aman.
8. Potential crop formation according
to the soil
8
Land
form
Soil
series
Useful crop(With irrigation) Annu
al
Peren
nial
Potential crop
formation/pattern
Rabi Kharif 1 Kharif 2
Medium
high
land
Mela
ndoh
Carrots,Wheat
,maize,Water
melon(L),
mustard(L).
Plantation
aus.
Plantation
aman.
- >Wheat/mustard(L)
/maize-woven
aus/jute-plantation
aman.
>Rabi crops-fallow-
Plantation aman.
>fallow-Maize-
Plantation aman.
>Boro(L)/fallow.
9. Crops Texture Drainage
Rice(paddy) + + H S L M
Rice(upland) + + H S M M
Rice(hungry) + + H S H M
Maize + + M 60 M G
Wheat + + M 60 M M
Jute + + H /M 10-75 M L
Ground nut + + + + L 50 M M L
9
Fine
Medium
Coarse
Verycoarse
tolerated
Freeessential
ordesirable
Imperfectwell
tolerated
Poortolerated
orneeded
Tolerancetoshort
periodsofwater
logging
Minimumground
waterdepth(cm)
Minimumrooting
depth
Erosionhazard
Salinitytolerance
Recommendation
10. Crops Moisture Reaction Nutrient needs
Drought
resistance
HighAWC
capacity
LowAWC
welltolerated
Optimum
pH
RangeofpH
tolerancefor
satisfactory
yield
Generallevel
of
requirements
Specific
requirements
Rice(paddy) L + 5.0-6.5 4.0-8.0 M High N
Rice(upland) L 4.5-7.5 N
Rice(hungry) M + 4.5-7.5 L
Maize L + 5.5-7.0 5.0-8.0 H High N
Wheat 6.0-7.0 H
Jute 6.0 -7.0 M
Ground nut M + 5.3-6.6 5.0-7.0 M
10
‘’+’’= attribute
L=low, M= medium, H= high & S= shallow
11. Requirement for selected crops
Crops Total growing
period(days)
Optimum
temperature
for growth (̊c)
Day length for
flowering
Soil
requirement
s
Sensitivity
to salinity
Rice 90-150 22-30 Short day /Day
neutral
Heavy soils
preferred for
percolation
losses : pH 5.5-6
Moderately
sensitive
Maize 100-140+ 24-30 Day neutral /Short
day
Well drained &
aerated soils
without water
logging :pH 5-7
Moderately
sensitive
Wheat Spring:100-130
Winter:180-250
15-20 Day neutral /long
day
Medium texture
is preferred ;
relatively tolerant
to high water
table: pH 6-7
Moderately
sensitive
Potato 100-150 15-20 Long day /Day
neutral
Well-drained,
aerated & porous
soils : pH 4.5-6
Moderately
sensitive
11
12. Nutrients requirement
Crops N P K
(kg /ha, growing period )
Rice 100-150 20-40 80-120
Maize 100-200 50-80 60-100
Wheat 100-150 35-45 25-50
Potato 80-120 50-80 125-160
12
13. References
• Booker Tropical Soil Manual,
”A handbook for soil survey and
agricultural land evaluation in the tropics &
sub tropics”
13
